Francis andrew duncan



(No Model.) r

F. A. DUNCAN.

GALK FOR HORSESHOES.

No. 596,026. Patented Dec. 21,1897.

I WIT/V388 s i JJVVEWZ'OZ? NITED STATES v PATENT OFFICE.

FRANCIS ANDREW DUNCAN, OF NORTH BALTIMORE, OHIO, ASSIGNOR OF ELEVEN-TWENTIETHS TO-DANIEL W. REDDIN, OF SAME PLACE.

v CALK FOR HORSESHOES.

SPECIFICATION forming part of Letters Patent No. 596,026, dated December 21, 1897.

Application filed February 12, 1897. Serial No. 623 ,059. (No model.)

To all whom it may concern:

Be it known that I, FRANCIS ANDREW DUN- CAN, a citizen of the United States, residing at North Baltimore, in the county of Wood and State of Ohio, have invented certain new and useful Improvements in Calks for Horseshoes; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This inventions relates to calks for horseshoes; and it consists in the novel construction and combination of the parts hereinafter fully described and claimed.

In the drawings, Figure 1 is a plan view from below of a horseshoe provided with calks according to this invention. Fig. 2 is a crosssection taken on the line m to in Fig. 1. Fig. 3 is a cross-section taken on the line y y in Fig. 1.

A is a horseshoe of any approved construction.

B is a wedge-shaped dovetailed socket in the middle of the front portion or toe of I the shoe. This socket is preferably formed in a boss I), proj ecting'from the bottom-of the shoe, so that the shoe maybe light and yet not weak at the bottom of the socket. The wider end of the wedge-shaped socket is arranged at the outside of the shoe. I

C is the front or toe calk, provided with a sharp edge or point 0. The calk C-is provided with a dovetailed projection D, which fits into the socket B, and d is a lip on the smaller end of the said projection. The, point 0 is hard, being preferably chilled, and the lip 01 is soft. The calk is inserted from the outside of the shoe, and the lip dis then bent or hammered over to the position shown in Fig. 2, so that the calk cannot come out. The

lip is out off before the calk is removed, and the calk is removed With a punch.

E are the rear or heel calks. Each calk E is provided with a sharp edge or point e and a wedge-shaped dovetailed projection f.

F are wedge shaped dovetailed sockets formed in the end portions of the horseshoe.

These sockets F have their wider ends on the inside of the shoe and are preferably formed in bosses g, which project from the bottom of the shoe, so that the shoe is not weakened by the. sockets. The calks E have small lips hon the smaller ends of their proj ections f, which are slid into the sockets F and secured by hammering or bending over the said lips, as shown in Fig. 3, and in a similar manner to the lip of the toe-calk C.

The points of the calks E are hardened the same as the points of the calks C.

New calks can be inserted as often as requisite without removing the shoe from the foot, and calks of various forms can be used, according to the state of the roads. The broader ends of the projections of the calks may alsohave lips or projections i, which are bent over and prevent or assist in preventing the calks from coming out of the sockets.

What I claim is-'- The combination, with a horseshoe provided with a wed ge-shaped dovetailed socket, of a calk provided with a projection fitting within the said socket and having lips extending across each end of it for engaging with the vertical side portions of the shoe, substantially as described and shown.

In testimony whereof I afiix my signature in presence of two witnesses.

FRANCIS ANDREW DUNCAN.

Witnesses: 1

W. H. MCMILLEN, CLIFF. G. NIGH. 

